/**********************************************************************

   Audacity - A Digital Audio Editor
   Copyright 1999-2018 Audacity Team
   License: wxwidgets

   James Crook

******************************************************************//**

\file SetEnvelopeCommand.cpp
\brief Definitions for SetEnvelopeCommand

\class SetEnvelopeCommand
\brief Command that sets envelope information

*//*******************************************************************/

#include "../Audacity.h"
#include "SetEnvelopeCommand.h"
#include "../Project.h"
#include "../Track.h"
#include "../TrackPanel.h"
#include "../WaveTrack.h"
#include "../Envelope.h"
#include "../ShuttleGui.h"
#include "CommandContext.h"

SetEnvelopeCommand::SetEnvelopeCommand()
{
}


bool SetEnvelopeCommand::DefineParams( ShuttleParams & S ){ 
   S.OptionalY( bHasT              ).Define(  mT,              wxT("Time"),     0.0, 0.0, 100000.0);
   S.OptionalY( bHasV              ).Define(  mV,              wxT("Value"),    1.0, 0.0, 2.0);
   S.OptionalN( bHasDelete         ).Define(  mbDelete,        wxT("Delete"),   false );
   return true;
};

void SetEnvelopeCommand::PopulateOrExchange(ShuttleGui & S)
{
   S.AddSpace(0, 5);

   S.StartMultiColumn(3, wxALIGN_CENTER);
   {
      S.Optional( bHasT           ).TieNumericTextBox(  _("Time:"),          mT );
      S.Optional( bHasV           ).TieNumericTextBox(  _("Value:"),         mV );
      S.Optional( bHasDelete      ).TieCheckBox(        _("Delete:"),        mbDelete );
   }
   S.EndMultiColumn();
}

bool SetEnvelopeCommand::ApplyInner( const CommandContext & context, Track * t )
{
   if( (t->GetKind() != Track::Wave)) 
      return true;

   // if no time is specified, then 
   //   - delete deletes any envelope in selected tracks.
   //   - value is not set for any clip

   WaveTrack *waveTrack = static_cast<WaveTrack*>(t);
   WaveClipPointers ptrs( waveTrack->SortedClipArray());
   for(auto it = ptrs.begin(); (it != ptrs.end()); it++ ){
      WaveClip * pClip = *it;
      bool bFound = 
         !bHasT || (
            ( pClip->GetStartTime() <= mT) &&
            ( pClip->GetEndTime() >= mT )
         );
      if( bFound )
      {
         // Inside this IF is where we actually apply the command
         Envelope* pEnv = pClip->GetEnvelope();
         if( bHasDelete && mbDelete )
            pEnv->mEnv.clear();
         if( bHasT && bHasV )
            pEnv->InsertOrReplace( mT, mV );
      }
   }

   return true;
}
